It’s official – first sub-zero temperature at O’Hare observation site in almost two years

 

The 7AM observation this morning at O’Hare International Airport was a -1 degree – the first time that site has recorded a sub-zero reading since a -9 degrees was registered back on February 10, 2011. Scanning the list of regularly-reporting hourly stations around the Chicago area finds the lowest reading a -5 at Waukegan.

 

Winds died off early this morning, so wind chill values ran mostly in the negative teens – the coldest at O’Hare has been a -15 degrees and the lowest overall a -19 degrees at DeKalb and a -18 degrees at Waukegan, Wheeling and Aurora.

 

Wisconsin recorded much colder readings under clear skies and over snow cover to the north – Haywood noted a low of a -23 this morning and Rhinelander recorded a -19 with a -40 degree wind chill.

 

Single-digit sub-zero temperatures and snow flurries covered a good portion of Lower Michigan and extreme northern Indiana where a Lake Effect Snow Advisory today called for an additional 1 to 3 inches of snow and a continuation of slippery roads and highways.

 

Following are some low temperatures and wind chills early this morning:

 

Location      Low Temp   Low Wind Chill

O’Hare              -1                      -15

Midway            -1                     -16

Aurora               -2                     -18

Waukegan        -5                     -18

West Chicago   -3                    -15

Wheeling          -3                      -18

Rockford           -2                     -15

DeKalb              -3                     -19

Wisconsin

Superior           -17                    -34

Ashland           -18                     -36

Rhinelander     -19                    -40

Green Bay        -8                     -29

Milwaukee        -5                     -27

Madison           -7                     -17

Iowa

Cedar Rapids   -4                    -18

Dubuque          -5                    -18

Michigan

Ann Arbor        -7                     -18

Jackson           -6                     -17

Escanaba        -15                   -32

Ironwood         -15                   -39

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